Artificial hip rolling bearing joint - has articulation on three axes by gimballed ball or roller bearings in spherical housing

摘要

The artificial hip joint comprises a mechanism giving spherical articulation round three or more separate axes. Each movement is supported by bearings between the components, which can be of ball, roller, needle-roller or taper-roller type. The advantages are reduced wear and increased strength and permanency. There are no tangental loads transmitted to the outer surface of the endoprosthesis of the cotyloidal cavity.